CS271399B1 - Method of nickel surfaces' surface treatment - Google Patents
Method of nickel surfaces' surface treatment Download PDFInfo
- Publication number
- CS271399B1 CS271399B1 CS886877A CS687788A CS271399B1 CS 271399 B1 CS271399 B1 CS 271399B1 CS 886877 A CS886877 A CS 886877A CS 687788 A CS687788 A CS 687788A CS 271399 B1 CS271399 B1 CS 271399B1
- Authority
- CS
- Czechoslovakia
- Prior art keywords
- nickel
- concentration
- surface treatment
- vitriol
- bath
- Prior art date
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000004381 surface treatment Methods 0.000 title claims description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- SURQXAFEQWPFPV-UHFFFAOYSA-L iron(2+) sulfate heptahydrate Chemical compound O.O.O.O.O.O.O.[Fe+2].[O-]S([O-])(=O)=O SURQXAFEQWPFPV-UHFFFAOYSA-L 0.000 claims description 6
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 6
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 229910000366 copper(II) sulfate Inorganic materials 0.000 claims description 4
- JZCCFEFSEZPSOG-UHFFFAOYSA-L copper(II) sulfate pentahydrate Chemical compound O.O.O.O.O.[Cu+2].[O-]S([O-])(=O)=O JZCCFEFSEZPSOG-UHFFFAOYSA-L 0.000 claims description 4
- 238000009835 boiling Methods 0.000 claims description 3
- 235000010262 sodium metabisulphite Nutrition 0.000 claims description 3
- 235000010265 sodium sulphite Nutrition 0.000 claims description 3
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims description 2
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 2
- 239000011790 ferrous sulphate Substances 0.000 claims description 2
- CSABAZBYIWDIDE-UHFFFAOYSA-N sulfino hydrogen sulfite Chemical compound OS(=O)OS(O)=O CSABAZBYIWDIDE-UHFFFAOYSA-N 0.000 claims description 2
- 239000004128 Copper(II) sulphate Substances 0.000 claims 1
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000007797 corrosion Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- BWFPGXWASODCHM-UHFFFAOYSA-N copper monosulfide Chemical compound [Cu]=S BWFPGXWASODCHM-UHFFFAOYSA-N 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 229910001369 Brass Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 239000010951 brass Substances 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- WBZKQQHYRPRKNJ-UHFFFAOYSA-L disulfite Chemical compound [O-]S(=O)S([O-])(=O)=O WBZKQQHYRPRKNJ-UHFFFAOYSA-L 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Electroplating Methods And Accessories (AREA)
- Chemically Coating (AREA)
Abstract
Description
Způsob povrchové úpravy niklových povrchů se týká vytváření dekoračních Černých povlaků na poniklovaných součástkách, jako je například poniklovaná ocel,, měď nebo mosaz nebo slitinový povlak NiFe na oceli, mědi a mosazi.The method of surface treatment of nickel surfaces relates to the formation of decorative black coatings on nickel-plated parts such as nickel-plated steel, copper or brass or NiFe alloy coating on steel, copper and brass.
Dosud nebyla nalezena lázeň, která by byla schopna vytvářet dekorativní sirníkové povlaky na povrchu niklu a jeho slitin NiFe. Dosavadní způsoby dekorativního černění niklových povlaků se týkají elektrolytického způsobu, к čemuž je nutné nákladné galvanické zařízení .So far, a bath has not been found capable of forming decorative sulfide coatings on the surface of nickel and its NiFe alloys. The prior art decorative blackening of nickel coatings relates to an electrolytic process, requiring expensive electroplating equipment.
Výše uvedený nedostatek se odstraní podle vynálezu. Jeho podstata spočívá v tom, že se na dokonale odmaštěný a omořený niklový nebo NiFe povrchu působí při teplotě 10 až 25° C a době expozice 10 sekund až 10 minut vodným roztokem kyseliny chlorovodíkové o hmotnostní koncentraci 20 až 30 %·, ve které se nezávisle na pořadí nebo současně rozpustí o hmotnostní koncentraci 20 až 40 g/1 síranu měďnatého krystalického (modré skalice) a 40 až 100 g/1 síranu železnatého krystalického (zelené skalice) a to tak, aby hmotnostní poměry modré skalice ku zelené skalici byly 1 : 2 až 1 : 5, a nakonec se přidá siřičitan nebo dvojsiřičitan sodný do hmotnostní koncentrace 1 až 10 g/1. Doba expozice se volí podle požadovaného odstínu v rozmezí 10 sekund až 10 minut. Získaný povrch se dokonale oplachuje nejprve ve studené a nakonec ve vroucí vodě. Konečný oplach se volí demineralizovaná nebo destilovaná voda. Povlak se dosušuje proudem horkého vzduchu 60 až 100° C. Údržba lázně spočívá hlavně v hlídání obsahu kysličníku siřičitého, který z lázně pomalu uniká. Z tohoto důvodu se nesmí s lázní míchat a nesmí se zahřívat. U lázně musí být instalováno dokonalé odsávání a to podobné jako u moření. Chemické rozbory lázně se provádějí podle známých analytických postupů.The above drawback is overcome according to the invention. It is based on the fact that a perfectly degreased and stained nickel or NiFe surface is treated at a temperature of 10 to 25 ° C and an exposure time of 10 seconds to 10 minutes with an aqueous solution of hydrochloric acid at a concentration of 20 to 30% by weight. sequentially or simultaneously dissolve in a weight concentration of 20 to 40 g / l of crystalline copper sulfate (blue vitriol) and 40 to 100 g / l of crystalline ferrous sulfate (green vitriol) so that the weight ratios of blue vitriol to green vitriol are 1: 2 to 1: 5, and finally sodium sulfite or disulfite is added to a weight concentration of 1 to 10 g / l. The exposure time is selected from 10 seconds to 10 minutes according to the desired shade. The surface obtained is rinsed thoroughly first in cold and then in boiling water. The final rinse is selected with demineralized or distilled water. The coating is dried with a hot air flow of 60 to 100 ° C. Maintaining the bath consists mainly of monitoring the sulfur dioxide that is slowly escaping from the bath. For this reason, it must not be stirred or heated. The bath must be perfectly suctioned, similar to pickling. Chemical analyzes of the bath are carried out according to known analytical procedures.
Získaný černý povlak se využije ke zvýšení dekoračního efektu - a to hlavně v bižuterii a spotřebním průmyslu. Pro dobrou korozní odolnost se využije i na vodovodní baterie nebo úpravu elektrických kontaktů - povlak je vodivý.The obtained black coating is used to enhance the decorative effect - mainly in jewelery and consumer goods. For good corrosion resistance it is also used for faucets or for adjusting electrical contacts - the coating is conductive.
Odmašťování a moření se provádí podle známých technologických postupů. Černění starých zpasivovaných povlaků je málo účinné. Likvidace odpadních vod se provádí pouhou neutralizací .Degreasing and pickling is carried out according to known technological procedures. Blackening of old sintered coatings is poorly effective. Waste water disposal is carried out by mere neutralization.
PříkladExample
Ve 300 ml vody se rozpustí nejprve 25 g modré skalice, potom 60 g zelené skalice a získaný roztok se smíchá se 700 ml koncentrované kyseliny chlorovodíkové o hmotnostní koncentraci 35 až 38 Nakonec se do lázně nasype 5 g siřičitanu nebo dvojsiřičitanu sodného. Lázeň se pomalu zamíchá tyčinkou a tímto způsobem je připraven 1 litr lázně. Oo této lázně se ponoří čerstvě poniklovaná ocel na dobu 60 sekund. Následuje oplach v proudu studené vody a nakonec se předmět ponoří do vroucí destilované vody na dobu 1 až 3 minut. Pokud se předmět po vytažení sám nevysuší, dosušuje se proudu horkého vzduchu 60 až 100° C. Lázeň je dokonale odsávána a bezpečnost práce je stejná jako и moření kyselinou chlorovodíkovou. ·25 g of blue vitriol, then 60 g of green vitriol are dissolved in 300 ml of water, and the solution obtained is mixed with 700 ml of concentrated hydrochloric acid 35 to 38% by weight. Finally, 5 g of sodium sulphite or disulphite are poured into the bath. The bath is slowly stirred with a rod and in this way 1 liter bath is prepared. Freshly nickel-plated steel is immersed in this bath for 60 seconds. Rinsing in a stream of cold water followed by immersion in boiling distilled water for 1 to 3 minutes. If the object does not dry itself after being pulled out, a hot air flow of 60 to 100 ° C is dried. ·
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS886877A CS271399B1 (en) | 1988-10-19 | 1988-10-19 | Method of nickel surfaces' surface treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS886877A CS271399B1 (en) | 1988-10-19 | 1988-10-19 | Method of nickel surfaces' surface treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS687788A1 CS687788A1 (en) | 1990-01-12 |
| CS271399B1 true CS271399B1 (en) | 1990-09-12 |
Family
ID=5416813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS886877A CS271399B1 (en) | 1988-10-19 | 1988-10-19 | Method of nickel surfaces' surface treatment |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS271399B1 (en) |
-
1988
- 1988-10-19 CS CS886877A patent/CS271399B1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CS687788A1 (en) | 1990-01-12 |
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